Making pandoc work on UPPMAX

Most of this PR is to get pandoc to play nicely on UPPMAX. To do this we have the following:

* pandoc stand alone binary, now bundled with the repo
* Fonts, now bundled with the repo
* XeLaTeX, stand alone now at `apus/v1/a2012043_nobackup/software/TeXLive`

Then this is wired in by telling the python package to use the binary with the `--pandoc_binary` (only works on linux RPM 86_64 systems, so shouldn't be the default).

To make this more painless, I've moved all of the bash installation stuff into two new bash scripts - one for normal installations on personal computers, one specifically for UPPMAX.